CN216054506U

CN216054506U - Relay terminal block

Info

Publication number: CN216054506U
Application number: CN202122099373.7U
Authority: CN
Inventors: 郑青焕
Original assignee: Shenzhen Siron Electrical Co ltd
Current assignee: Shenzhen Siron Electrical Co ltd
Priority date: 2021-09-01
Filing date: 2021-09-01
Publication date: 2022-03-15
Anticipated expiration: 2031-09-01

Abstract

The application provides a relay terminal block, which comprises a mounting seat, a relay, a power supply input terminal, an output terminal and an anti-surge element; the relay is arranged on the mounting seat; the power input terminal is arranged on the mounting seat and is connected with the coil of the relay; the output terminal is arranged on the mounting seat and is connected with a normally open and normally closed switch of the relay; an anti-surge element is arranged on the mounting seat and is connected with the contact of the relay in parallel, and the impedance of the anti-surge element can be reduced when the anti-surge element is subjected to transient overvoltage. The application provides a relay terminal platform, parallelly connected on the contact of relay and set up anti surge component, when the relay coil outage, can effectively delay the impact current in the twinkling of an eye of load side, can play the guard action to the contact of relay, has prolonged the life of relay, has ensured the safe in utilization of relay.

Description

Relay terminal block

Technical Field

The application belongs to the technical field of electrical connection, and more specifically relates to a relay terminal block.

Background

The relay is an automatic switch element with an isolation function, and is a very important control element widely applied to relay communication, remote control, remote measurement, automatic control, electromechanical integration and power electronic equipment.

The relay comprises a coil and a contact, when the coil power supply of the relay is cut off, the relay can generate surge (the surge is instantaneous overvoltage exceeding normal working voltage, and the surge is violent pulse which only occurs in a few millionths of a second), although the energy consumed by the surge is less, the voltage of the surge is higher, the risk of damaging the relay exists, and potential safety hazard exists.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a relay terminal platform to when solving the relay coil outage that exists among the prior art, the relay can produce the surge, causes the technical problem of relay damage.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: the relay terminal block comprises a mounting base, a relay, a power input terminal, an output terminal and an anti-surge element; the relay is arranged on the mounting seat; the power input terminal is arranged on the mounting seat and is connected with the coil of the relay; the output terminal is arranged on the mounting seat and is connected with a normally open and normally closed switch of the relay; an anti-surge element is arranged on the mounting seat and is connected with the contact of the relay in parallel, and the impedance of the anti-surge element can be reduced when the anti-surge element is subjected to transient overvoltage.

Optionally, the anti-surge element is a varistor.

Optionally, the anti-surge element is a bidirectional transient diode.

Optionally, the relay terminal block further includes a one-way conduction element, and the one-way conduction element is disposed between the power input terminal and the relay.

Optionally, the relay terminal block further includes a switch, disposed between the power input terminal and the relay, for switching connection between a first connection mode and a second connection mode between the power input terminal and the relay.

Optionally, the relays and the anti-surge elements are provided in plurality, and the relays and the anti-surge elements are connected in a one-to-one correspondence manner.

Optionally, the power input terminal is an MIL connector.

Optionally, the output terminal is a nut connection terminal or a spring plate connection terminal.

Optionally, a groove is formed in the bottom of the mounting seat and used for mounting the relay terminal block.

Optionally, the relay terminal block further comprises a protective cover; the protection casing detachably connect in on the mount pad, the protection casing cover is located the relay, power input terminal, output terminal with anti surge component is outside.

The application provides a relay terminal platform's beneficial effect lies in: compared with the prior art, this application relay terminal platform connects in parallel on the contact of relay and has set up anti surge component, and when the relay coil outage, can effectively delay the impact current in the twinkling of an eye of load side, can play the guard action to the contact of relay, has prolonged the life of relay, has ensured the safe in utilization of relay.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a relay terminal block provided in an embodiment of the present application.

Fig. 2 is a first schematic circuit diagram of a relay terminal block according to an embodiment of the present application.

Fig. 3 is a second schematic circuit diagram of a relay terminal block according to an embodiment of the present application.

Wherein, in the figures, the respective reference numerals:

1-mounting a base; 2-a relay; 3-a power input terminal; 4-an output terminal; 5-a voltage dependent resistor; 6-bidirectional transient diode; 7-a unidirectional conducting element; 8-a diverter switch; 9-groove.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 3 together, a relay terminal block according to an embodiment of the present application will be described. The relay terminal block, the mounting seat 1, the relay 2, the power input terminal 3 and the anti-surge element; the relay 2 is arranged on the mounting base 1; the power input terminal 3 is arranged on the mounting base 1 and is connected with a coil of the relay 2; the output terminal 4 is arranged on the mounting seat 1 and is connected with a normally open and normally closed switch of the relay 2; an anti-surge element is provided on the mount 1 and connected in parallel with the contact of the relay 2, and the anti-surge element is used to suppress the generation of surge on the relay 2.

Compared with the prior art, the relay terminal block provided by the application has the advantages that the anti-surge element is arranged on the contact of the relay 2 in a parallel connection mode, the instantaneous impact current of the load side can be effectively delayed when the coil of the relay 2 is powered off, the contact of the relay 2 can be protected, the service life of the relay 2 is prolonged, and the use safety of the relay 2 is guaranteed.

In one embodiment of the present application, please refer to fig. 1 and fig. 2 together. The anti-surge element is a varistor 5. When high voltage is impacted, the voltage dependent resistor 5 can be changed from high impedance to low impedance in a short time, so that the effect of shunting is achieved, the contact of the relay 2 is protected, and then the voltage clamp at the two ends of the relay is controlled to be a preset value, so that the effects of resisting surge fluctuation and protecting a rear-stage circuit are achieved.

In another embodiment of the present application, please refer to fig. 1 and fig. 3 together. The anti-surge element is a bi-directional transient diode 6. The bidirectional transient diode can prevent the impact of overlarge reverse voltage on a load circuit, can absorb the surge power of thousands of watts, and is mainly characterized in that under the condition of reverse application, when the bidirectional transient diode bears a high-energy large pulse, the working impedance of the bidirectional transient diode is immediately reduced to an extremely low conduction value, so that large current is allowed to pass, meanwhile, the voltage is clamped at a preset level, the response time of the bidirectional transient diode is millisecond level, and therefore the bidirectional transient diode can resist surge fluctuation and protect a rear-stage circuit. The bidirectional transient diode has the following advantages: the bidirectional transient diode 6 can be applied to direct current arcs and alternating current circuits; the clamping voltage of the transient diode has high precision and is more suitable for circuits requiring more precision; the transient diode has the advantages of high response speed, small current impact damage and long service life.

In one embodiment of the present application, please refer to fig. 2 and fig. 3 together. The relay terminal block further includes a one-way conduction element 7, and the one-way conduction element 7 is provided between the power supply input terminal 3 and the relay 2. Through setting up one-way conduction component 7, can prevent to connect wrong line when connecting power input terminal 3 and relay 2, avoid the user scene because of connecting wrong line and leading to production fault.

In one embodiment of the present application, please refer to fig. 2 and fig. 3 together. The relay terminal block further includes a changeover switch 8, and the changeover switch 8 is provided between the power input terminal 3 and the relay 2, and is used for switching the connection of the power input terminal 3 and the relay 2 between the first connection mode and the second connection mode. In this embodiment, the first connection mode is an NPN mode, the second connection mode is a PNP mode, and the NPN and PNP bipolar inputs are provided, so that a user can conveniently switch the NPN and PNP types, and the operation and use are flexible and convenient. The change-over switch 8 is connected with the signal indication lamp, and the signal indication lamp adopts emitting diode, can select emitting diode of different colours according to the user's demand, for example: gallium arsenide diodes emit red light, gallium phosphide diodes emit green light, silicon carbide diodes emit yellow light, and gallium nitride diodes emit blue light. The indicator light with different colors is designed under different modes, such as: the NPN mode is bright green and the PNP mode is bright red.

In one embodiment of the present application, please refer to fig. 1-3. The relays 2 and the anti-surge elements are provided in a plurality, and the relays 2 and the anti-surge elements are connected in a one-to-one correspondence manner. Through setting up a plurality of relays 2 and anti surge component, integrate the degree height, can satisfy different user demands.

In one embodiment of the present application, please refer to fig. 1. The power input terminal 3 is an MIL connector (header connector). The MIL connector is provided with and is used for electrically conductive contact pin, has reasonable spatial arrangement, compares with the ordinary connector of equidimension, and the area of contact of MIL connector is bigger, the conducting capacity is better, has improved the stability of relay terminal platform during operation greatly, and the ox horn structure of MIL connector can realize external electrical component's quick plug, easy operation, convenience, swift.

In one embodiment of the present application, please refer to fig. 1. The output terminal 4 is a nut wiring terminal or a spring plate wiring terminal. The preferred shell fragment formula binding post that adopts of this embodiment, only need during the wiring insert the mounting hole with the screwdriver, open the wiring hole of shell fragment, insert the wiring hole with the wire again, extract the screwdriver can, the installation wiring is more simple and convenient, and is more swift, and work efficiency improves greatly, adopts shell fragment formula binding post simultaneously, and the structure is compacter, has reduced the whole volume of relay terminal platform, can be applicable to constrictive installation space.

In one embodiment of the present application, please refer to fig. 1. The bottom of the mounting base 1 is provided with a groove 9 for mounting the relay terminal block on the guide rail. The installation of the relay terminal block can be more convenient by arranging the groove 9, a plurality of relay terminal blocks can be installed on the same guide rail, a DIN (German standard) 35mm guide rail is generally adopted in the industry, and the specific model size can be determined according to the actual use requirement of a user. The relay terminal blocks are mounted on the guide rails, so that the plurality of relay terminal blocks are mounted more compactly, mounting space is fully utilized, and meanwhile, the wiring box can be seen neatly.

In one embodiment of the present application, the relay terminal block further includes a shield (not shown); the shield is detachably attached to the mount 1, and the shield covers the relay 2, the power input terminal 3, the output terminal 4, and the anti-surge element. Through setting up the protection casing, can play waterproof dirt-proof effect, improve the life of relay terminal platform. The protection casing can be dismantled with mount pad 11 and be connected, can take off the protection casing during the distribution to cause the interference to the distribution, adorn the protection casing again after the distribution, the maintenance and the maintenance of relay terminal platform also are convenient for simultaneously to detachable design. The protective cover can be made of transparent materials, so that the wiring condition of the relay terminal block can be observed conveniently.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A relay terminal block, comprising:

a mounting seat (1);

the relay (2) is arranged on the mounting seat (1);

the power input terminal (3) is arranged on the mounting seat (1) and is connected with the coil of the relay (2);

the output terminal (4) is arranged on the mounting seat (1) and is connected with a normally open and normally closed switch of the relay (2);

and the anti-surge element is arranged on the mounting seat (1) and is connected with the contact of the relay (2) in parallel, and the impedance of the anti-surge element can be reduced when the anti-surge element is subjected to transient overvoltage.

2. The relay terminal block according to claim 1, wherein the anti-surge element is a varistor (5).

3. The relay terminal block according to claim 1, wherein the anti-surge element is a bi-directional transient diode (6).

4. Relay terminal block according to any of claims 1-3, further comprising a unidirectional conducting element (7), the unidirectional conducting element (7) being arranged between the power input terminal (3) and the relay (2).

5. Relay terminal block according to any of claims 1-3, further comprising a diverter switch (8), the diverter switch (8) being arranged between the power input terminal (3) and the relay (2) for switching the connection of the power input terminal (3) and the relay (2) between a first connection mode and a second connection mode.

6. The relay terminal block according to claim 1, wherein the relay (2) and the anti-surge element are each provided in plurality, and the relay (2) and the anti-surge element are connected in one-to-one correspondence.

7. Relay terminal block according to claim 1, characterized in that the power input terminal (3) is a MIL connector.

8. Relay terminal block according to claim 1, characterised in that the output terminal (4) is a nut terminal or a spring terminal.

9. Relay terminal block according to claim 1, characterised in that the bottom of the mounting socket (1) is provided with a recess (9) for mounting of the relay terminal block.

10. The relay terminal block of claim 1, further comprising a protective cover; the protection casing detachably connect in mount pad (1) is last, the protection casing cover is located relay (2), power input terminal (3), output terminal (4) and anti surge component is outside.